Hyperiid amphipods around the seamounts and islands off northeastern Brazil

Souza, Christiane Sampaio de; Conceição, Laura Rodrigues da; Mafalda, Paulo de Oliveira

doi:10.1590/s1679-87592016123306404

Cited by 4 publications

(2 citation statements)

References 36 publications

(33 reference statements)

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“…The low values of nitrate (0.36–2.64 mmol m −3 ) and phosphate (0.15–0.45 mmol m −3 ) were similar to those found in previous studies, such as in the CIMAR 5 cruise (Von Dassow & Collado-Fabbri, 2014). Off-shore water is well known for having N and P deficiencies in the SEP (Raimbault & Garcia, 2008; Farías et al ., 2013; Stramma et al ., 2013; Cornejo D'Ottone et al ., 2016; Wang et al ., 2019).…”

Section: Discussionmentioning

confidence: 99%

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

et al. 2021

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Oceanic islands and seamounts are considered biodiversity hotspots. Here, we present a taxonomy and community analyses of hyperiid amphipods collected near oceanic islands and over seamounts of the Juan Fernández Archipelago and Desventuradas Archipelago in the South-east Pacific. Both archipelagos are separated by about 800 km over the meridional gradient, suggesting the existence of different hyperiid communities because of apparent geographic isolation and distinctive oceanographic characteristics between regions. To test this hypothesis, zooplankton samples were collected from 19 stations during the CIMAR 22 ‘Oceanic Island’ cruise in October–November 2016. In total, 56 species of hyperiids were found, of which Phrosina semilunata, Lestrigonus schizogeneios, Hyperietta stephenseni, Hyperioides longipes, Phronimella elongata and Primno latreillei were the most abundant and recurrent species. The species richness (S), Shannon–Wiener diversity (H’) and dominance (D) of both the archipelagos were not significantly different. Additionally, except for a small group of rare species, the species composition was similar in both areas. Most species showed greater abundances than those observed in the coastal upwelling zone off Chile, whereas shared species between regions suggested the presence of a single biogeographic unit comprising the coastal transition zone and oceanic area off Chile within which both archipelagos are included. Correlation analysis indicated that salinity was the best predictor for the community structure, which provides evidence that the contributions of previously described water masses of the South-east Pacific may influence the spatial distribution and composition of the hyperiid community.

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Section: Discussionmentioning

confidence: 99%

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

et al. 2021

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“…However, they are less diverse than benthic amphipods and are less studied [1]. In southwestern tropical Atlantic waters, pelagic amphipods are represented by the well-known Hyperiidea H. Milne Edwards, 1830 [2][3][4][5][6], and families such as Alicellidae Lowry & De Broyer, 2008, Amathillopsidae Pirlot, 1934, Cyphocarididae Lowry & Stoddart, 1997, Eurytheneidae Stoddart & Lowry, 2004, Stegocephalidae Dana, 1852, and Synopiidae Dana, 1853 [7].…”

Section: Introductionmentioning

confidence: 99%

A New Species of Cyphocaris Boeck, 1871 (Amphipoda: Lysianassoidea: Cyphocarididae): Found off the Rocas Atoll, Northeastern Brazil

et al. 2021

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A new species of the genus Cyphocaris Boeck, 1871, is described. The material examined was collected during the “Acoustics along the Brazilian Coast” (Abraços 1) project, by micronektonic trawls at a targeted depth of 525 m, off the Rocas Atoll, Rio Grande do Norte state, Brazil. Cyphocaris boecki sp. nov. can be grouped with the eyed species in the genus but differs from them—except for C. faurei K. H. Barnard, 1916 and C. latirama, Hendrycks & Conlan, 2003—in presenting a dorsally smooth pereonite 1. However, the new species can be distinguished from both by its maxilliped inner plate with two robust apical setae, pereopod 7 basis with weakly produced posterodistal lobe, telson lobes without setae, spines or apical nails, and other characters that are individually discussed among them. The new species can be readily differentiated from C. pedroi Sorrentino, Alves, Johnsson & Senna, 2016, also described from Brazil, by presenting eyes, a rounded lateral cephalic lobe, very elongated antenna 2 almost reaching body length, and pereopod 5 basis, with apically acute spur reaching about two-thirds of the propodus. This is the second record of the genus for Brazilian waters.

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Comparative study of trophic and elemental characteristics of zooplankton in deep (500–3500 m) and shallow (0–200 m) layers

Chen

Tao

et al. 2018

Deep Sea Research Part I: Oceanographic Research Papers

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Hyperiid amphipods around the seamounts and islands off northeastern Brazil

Abstract: Data collected on large-scale surveys around the seamounts and islands off northeastern Brazil provide information on the hyperiid amphipod populations. Thirty-six species were identified.

Cited by 4 publications

References 36 publications

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

A New Species of Cyphocaris Boeck, 1871 (Amphipoda: Lysianassoidea: Cyphocarididae): Found off the Rocas Atoll, Northeastern Brazil

Comparative study of trophic and elemental characteristics of zooplankton in deep (500–3500 m) and shallow (0–200 m) layers

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Hyperiid amphipods around the seamounts and islands off northeastern Brazil

Abstract: Data collected on large-scale surveys around the seamounts and islands off northeastern Brazil provide information on the hyperiid amphipod populations. Thirty-six species were identified.

Cited by 4 publications

References 36 publications

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

A New Species of Cyphocaris Boeck, 1871 (Amphipoda: Lysianassoidea: Cyphocarididae): Found off the Rocas Atoll, Northeastern Brazil

Comparative study of trophic and elemental characteristics of zooplankton in deep (500–3500 m) and shallow (0–200 m) layers

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Comparative study of trophic and elemental characteristics of zooplankton in deep (500–3500 m) and shallow (0–200 m) layers